/**************************************************************************
**
** This file is part of Qt Creator
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** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
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** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** GNU Lesser General Public License Usage
**
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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#ifndef TOOLTIP_H
#define TOOLTIP_H

#include "texteditor/texteditor_global.h"

#include <QtCore/QSharedPointer>
#include <QtCore/QObject>
#include <QtCore/QTimer>

QT_BEGIN_NAMESPACE
class QPoint;
class QString;
class QColor;
class QWidget;
QT_END_NAMESPACE

namespace TextEditor {

namespace Internal {
class Tip;
class TipContent;
}

/*
 * This class contains some code duplicated from QTooltip. It would be good to make that reusable.
 */

class TEXTEDITOR_EXPORT ToolTip : public QObject
{
    Q_OBJECT
private:
    ToolTip();

public:
    virtual ~ToolTip();

    static ToolTip *instance();

    void showText(const QPoint &pos, const QString &text, QWidget *w = 0);
    void showColor(const QPoint &pos, const QColor &color, QWidget *w = 0);
    void hide();
    bool isVisible() const;

    virtual bool eventFilter(QObject *o, QEvent *event);

private:
    bool acceptShow(const QSharedPointer<Internal::TipContent> &content,
                    const QPoint &pos,
                    QWidget *w);
    void setUp(const QSharedPointer<Internal::TipContent> &content,
               const QPoint &pos,
               QWidget *w);
    bool requiresSetUp(const QSharedPointer<Internal::TipContent> &content, QWidget *w) const;
    void placeTip(const QPoint &pos, QWidget *w);
    int tipScreen(const QPoint &pos, QWidget *w) const;
    void showTip();
    void hideTipWithDelay();
    void hideQtTooltip();

private slots:
    void hideTipImmediately();

private:
    Internal::Tip *m_tip;
    QWidget *m_widget;
    QTimer m_showTimer;
    QTimer m_hideDelayTimer;
};

} // namespace TextEditor

#endif // TOOLTIP_H